An experimental tower over 100 metres (328 feet) high in northern China – dubbed the world’s biggest air purifier by its operators – has brought a noticeable improvement in air quality, according to the scientist leading the project, as authorities seek ways to tackle the nation’s chronic smog problem. [...]

The head of the research, Cao Junji, said improvements in air quality had been observed over an area of 10 square kilometres (3.86 square miles) in the city over the past few months [...].
— South China Morning Post

Now that the experimental smog-eating tower is up and running in the city of Xian, authorities are hoping to build much bigger, scaled-up versions in other Chinese cities soon: "A full-sized tower would reach 500 metres (1,640 feet) high with a diameter of 200 metres (656 feet)," the South China... View full entry

In the unofficial category of "Creative Pollution Solutions," the Dutch firm Studio Roosegaarde is angling to be the winner: the firm has several projects that introduce innovative solutions to existing infrastructural challenges. First up, in partnership with bike-sharing firm OFO, the studio... View full entry

The famed monument to love ... has for years been acquiring a yellow tinge despite a ban on coal-powered industries in the area.

Authorities have been applying "mud packs" around the side walls and towers since last year to draw the impurities out of the stone, but have not yet touched the main central dome. [...]

The mud-pack therapy involves covering the surface with fuller's earth and leaving it to dry before removing it with soft brushes and distilled water.
— yahoo.com

More from the annals of preservation:"Never the Same River Twice" – Experimental preservation and architectural authorship with Jorge Otero-Pailos, on Archinect Sessions #47Saddam Hussain's architectural heritage—and what to do with itThe Seagram Building after the Four Seasons: maintaining a... View full entry

Despite reports of dangerous levels of pollution in Rio's Guanabara Bay and concerns that floating garbage could damage or slow competitors' boats, sailors at the 2016 Olympics are showing little or no fear of getting into the water [...]

Many said the dangers of sailing in Rio have been overblown and worried that the water concerns are overshadowing some of the most exciting and challenging sailing of their lives.
— Reuters

So far, the Rio Olympics seem to be going pretty well. But before they opened, a series of issues plagued the preparations. For some background, check out these links:Athletes refuse to move into Rio's Olympic Village, citing “blocked toilets, leaking pipes and exposed wiring”Rio... View full entry

In a new paper, economists and public health researchers have found that not even working indoors in an office can protect people from the deleterious impacts of polluted air and particularly fine particulate pollution — defined as tiny particles that can travel deep into our lungs and even get into the bloodstream and eventually reach the central nervous system.
— the Washington Post

Cities around the world are choking from polluted skies. Find out more:Is biking good for you even if the air is heavily polluted?These are the most-polluted cities in the USDelhi’s air pollution is worse than Beijing's. A new app measures the air quality in real timeBillions exposed to... View full entry

In the latest attempt from a big city to move away from car hegemony, Barcelona has ambitious plans. Currently faced with excessive pollution and noise levels, the city has come up with a new mobility plan to reduce traffic by 21%. And it comes with something extra: freeing up nearly 60% of streets currently used by cars to turn them into so-called “citizen spaces”.
— The Guardian

"The plan is based around the idea of superilles (superblocks) – mini neighbourhoods around which traffic will flow, and in which spaces will be repurposed to “fill our city with life”, as its tagline says."A precedent for Barcelona's superblocks was actually... View full entry

Outdoor air pollution has grown 8% globally in the past five years, with billions of people around the world now exposed to dangerous air, according to new data from more than 3,000 cities compiled by the World Health Organisation (WHO).

While all regions are affected, fast-growing cities in the Middle East, south-east Asia and the western Pacific are the most impacted with many showing pollution levels at five to 10 times above WHO recommended levels.
— The Guardian

According to the WHO data, the most polluted city in the world is Onitsha, a booming port city on the coast of Nigeria. With almost 600 micrograms per cubic meter, the city has around 30 times the recommended level of PM10 particles (the larger, but still dangerous, air pollutant particles).In... View full entry

Residents of just four American metropolitan areas have had regular access to healthy air in recent years. Those four places — Burlington-South Burlington, Vt.; Honolulu; Elmira-Corning, N.Y.; and Salinas, Calif. — had the pleasure of breathing air consistently free of unhealthy ozone, short-term particle and year-round particle pollution from 2012 to 2014,according to a new national air quality report card from the American Lung Association.

Actually, air quality has significantly improved in American cities since the passing of the 1970 Clean Air Act and subsequent legislation. This year marked the lowest particle pollution levels in 16 years for all but four of the top 20 most-polluted cities.Still, things remain pretty grim: more... View full entry

'Mexico City’s water system goes against its own functional essence. The city is dehydrating itself. We’re mixing our water with poisonous waste and then pumping it out through a complex network of pipes. Just like what happens when a human is dehydrated, Mexico City has diarrhea.' — Elias Cattan
— Quartz

"In a mega-metropolis with a deep history of corrupt leaders and state-sanctioned misinformation, [architect Elias Cattan of Taller 13] believes awareness is the first step. That’s why he’s part of a growing movement of environmental scientists, activists, designers and engineers determined to... View full entry

The planned "ventilation corridors" would range from less than 80 meters to more than 500 meters wide and – hopefully – do what their name suggests, providing a conduit for wind to blow away pollutants like particulate matter.Five major corridors are planned for the Chinese capital, running... View full entry

The number of premature deaths attributed to particulate pollution has risen, government figures show.

According to Public Health England, the percentage of premature deaths attributable to minute particles known as PM2.5s rose to 5.3% in 2013 in England from 5.1% in 2012. The death rate in London rose to 6.7% from 6.6%. The figures follow significant improvements in air quality across England in 2010 and 2011.
— the Guardian

For the first two weeks of the year, private cars with even-numbered license plates are allowed on the roads only on even-numbered dates, and those with odd-numbered plates on odd dates. The restrictions have noticeably reduced traffic in a city with 9 million cars, more than double that of a decade ago.

In 2014, the World Health Organization found New Delhi’s air to be the dirtiest of 1,600 cities it studied. Scientists blame the high levels of pollutants [...] for thousands of deaths a year.
— latimes.com

Previously: Delhi’s air pollution is worse than Beijing's. A new app measures the air quality in real time. View full entry

China has detailed its urban planning vision, which has been designed to make its sprawling cities more inclusive, safer and better places to live.

[...] policymakers pledged to transform urban development patterns and improve city management.

The last time China held such a high-level meeting was in 1978, when only 18 percent of the population lived in cities. By the end of 2011, in excess of 50 percent of the population called the city their home.
— chinadaily.com.cn

Health warnings have been issued this week as atmospheric pollution is set to rise to dangerously high levels on Thursday and Friday, with levels of breathable toxic particles reaching 100 micrograms per cubic meter.

In a bid to stop pollution reaching dangerous levels, the council is making the city's buses and metro free on Thursday and Friday to reduce the emissions caused by Turin's heavy traffic.
— thelocal.it

Other cities coping with mitigating air pollution:Beijing's latest "airpocalypse" is bad enough for city to issue first ever red alertCar-free events significantly improve air qualityDelhi’s air pollution is worse than Beijing's. A new app measures the air quality in real time.Giant bubbles... View full entry

Sadly, even the Grand Canyon, a symbolic landmark of America’s natural environment, unfortunately isn’t immune to the ravages of pollution.

Concentrations of mercury and selenium in canyon’s food webs — the interconnected food chains in the environment — regularly exceed levels considered risky for fish and wildlife. Those findings are from a study from the U.S. Geological Survey scientists published in the journal Environmental Toxicity and Chemistry.
— Discovery

It's the kind of news that reads like Anthropocene poetry – both existentially dark and metaphorically potent. This vast fissure in the Earth's crust, which presents us with two billion years of geologic history and basically defines our image of the sublime, has been thoroughly contaminated... View full entry